docs: [[_TOC_]] (and more?) undocumented
Document the usage of
[[_TOC_]] in https://docs.gitlab.com/ee/user/project/wiki/ and possibly in https://docs.gitlab.com/ee/user/markdown.html#wiki-specific-markdown.
There seems to be some info on stack overflow.
Introduced in !2952 (merged) (GitLab 8.6!).
I suspect many more secret extensions actually exist, is that possible?
- Follow-up from: !2952 (merged)
New doc or update?
- New documentation
- Update existing documentation